<template>
	<div>
		<div class="search">
		  <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
		</div>
		<div class="search-content" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item in list" :key="item.id" @click="handleCityClick(item.name)">
					{{ item.name }}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
	</div>
</template>

<script>
	import { mapMutations } from 'vuex'
	import Bscroll from 'better-scroll'
	export default {
		name: 'CitySearch',
		data() {
			return {
				keyword: '',
				list: [],
				timer: null,
			};
		},
		computed: {
			hasNoData() { // 搜不到数据的时候
				return !this.list.length;
			}
		},
		methods: {
			handleCityClick(city) {
				// this.$store.commit('changeCity', city);
				this.changeCity(city);
				this.$router.push('/'); // 跳转回首页
			},
			...mapMutations(['changeCity'])
		},
		props: ['cities'],
		watch: {
			keyword() {
				if(this.timer){
					clearTimeout(this.timer)
				}
				if (!this.keyword) {
					this.list = []
					return
				}
				this.timer = setTimeout(() => {
					let result = []
					for (let i in this.cities) {
						this.cities[i].forEach((value) => {
							if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) { // 如果搜索包含就push进去
								result.push(value)
							}
						})
					}
					this.list = result;
				}, 100)
			}
		},
		mounted() {
			this.scroll = new Bscroll('.search-content')
		}
	}
</script>

<style lang="less" scoped>
	@import '~styles/varibles.less';
	.search{
		height: .72rem;
		padding: 0 .1rem;
		background: @bgColor;
		.search-input{
			box-sizing: border-box;
			width: 100%;
			height: .62rem;
			padding: 0 .1rem;
			line-height: .62rem;
			text-align: center;
			border-radius: .06rem;
			color: #666;
		}
	}
	 .search-content{
		z-index: 1;
		overflow: hidden;
		position: absolute;
		top: 1.58rem;
		left: 0;
		right: 0;
		bottom: 0;
		background: #eee;
	 }
	 
	 .search-item{
		line-height: .62rem;
		padding-left: .2rem;
		background: #fff;
		color: #666;
	 }
</style>
